Home / 20,458,458.72-28,232,820-11,165,944.32

Finding the Fourth Proportional to 20,458,458.72, 28,232,820 and 11,165,944.32

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Solution

The fourth proportional to 20,458,458.72, 28,232,820 and 11,165,944.32 is: 15,409,083.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458,458.72 : 28,232,820 = 11,165,944.32 : x
  2. Step 2: Convert to fraction form
    20,458,458.72/28,232,820 = 11,165,944.32/x
  3. Step 3: Cross multiply
    20,458,458.72x = 28,232,820 × 11,165,944.32
  4. Step 4: Simplify right side
    20,458,458.72x = 315,246,096,116,582.44
  5. Step 5: Solve for x
    x = 315,246,096,116,582.44/20,458,458.72
  6. Step 6: Final answer
    x = 15,409,083.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.